There are four substances W, X, Y and Z. The substance W is a dark violet solid having diatomic molecules. A solution of W in alcohol is used as a common antiseptic C. The substance X is a white solid which is usually recovered from sea water on a large scale. The substance Y is a white solid which is insoluble in water and used in the form of small balls for the safe storage of woollen clothes. The substance Z is a yet another white solid which is used in making commonly used dry cells.
(a) Name (i) W (ii) X (iii) Y and (iv) Z.
(b) Out of W, X, Y and Z, which substance/substances can undergo sublimation?
(c) Which substances organic in nature?
(d) What is the name of substance C?
(e) Which substance belongs to the halogen family?
(a)
(i) Iodine
(ii) Sodium chloride (Common salt)
(iii) Naphthalene
(iv) Ammonium chloride
(b) W(iodine), Y(naphthalene) and Z(ammonium chloride)
(c) Y(naphthalene)
(d) Tinctureiodine
(e) W(iodine)